Maryland Dams
425 dams tracked by the National Inventory of Dams
Total Dams
425
High Hazard
107
25.2%
Poor / Unsatisfactory
92
Average Age
60 yrs
Hazard Classification
Condition Assessment
Federal
14
State
45
Local
166
Private
192
Tallest Dams
- Jennings Randolph Dam296 ft
- Savage River Dam184 ft
- Liberty Dam175 ft
- Prettyboy Dam155 ft
- T. Howard Duckett Dam139 ft
High Hazard Dams
Poor Condition Dams
- Liberty DamUnsatisfactory
- Druid Hill Lake Reservoir and Storage TanksPoor
- Rocky Gap DamPoor
- Piney Run DamUnsatisfactory
- Warner Gap Hollow DamUnsatisfactory
All Dams in Maryland
Showing 51–75 of 107
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Montebello Baltimore City County | 30 | 1880 | High | Fair |
| Lake Linganore Frederick County | 63 | 1972 | High | Unsatisfactory |
| Lake Largo Town Center Dam (Kings Way) Prince George's County | 27 | 1973 | High | Poor |
| Lake Helene Dam Montgomery County | 27 | 1950 | High | Satisfactory |
| Lake Frank Montgomery County | 78 | 1967 | High | Fair |
| Lake Elkhorn Howard County | 26 | 1974 | High | Satisfactory |
| Lake Ashburton Reservoir and Storage Tanks Baltimore City County | 40 | 1910 | High | Not Rated |
| Lake Arbor (Lake Arbor Way) Prince George's County | 38 | 1971 | High | Poor |
| Kurt Sherman Dam (Upper Pond) Washington County | 28 | 1957 | High | Fair |
| Koontz Run Reservoir Tanks Allegany County | 21 | 2015 | High | Satisfactory |
| Junction Industrial Park Howard County | 18 | 1984 | High | Satisfactory |
| Jennings Randolph Dam Mineral County | 296 | 1981 | High | Not Available |
| Inspiration Lake Montgomery County | 40 | 1950 | High | Satisfactory |
| Indian Creek Site 3 Prince George's County | 28 | 1983 | High | Fair |
| Indian Creek Site 2 Prince George's County | 22 | 1983 | High | Fair |
| Hunting Creek Dam Frederick County | 79 | 1969 | High | Fair |
| Holly House Meadows Dam Howard County | 20 | 1983 | High | Satisfactory |
| Hillen Road Water Supply Tank Baltimore City County | 36 | 1920 | High | Satisfactory |
| Henson Creek Flood Control Dam #17 Prince George's County | 22 | 1992 | High | Poor |
| Hanson Oaks Swm (Bmp Structure 1558-002) Prince George's County | 20 | 1900 | High | Poor |
| Guilford Reservoir Storage Tanks Baltimore City County | 35 | 1893 | High | Satisfactory |
| Gudelsky Pond Dam Montgomery County | 20 | 1987 | High | Satisfactory |
| Greenbrier State Park Dam & Dike Washington County | 64 | 1965 | High | Unsatisfactory |
| Greenbelt Dam Prince George's County | 22 | 1936 | High | Satisfactory |
| Gilbert Run Dam 3 (Jameson Dam) Charles County | 37 | 1964 | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.